Dzyaloshinskii-Moriya-type spin-spin interaction from mixed-parity superconductivity
arXiv:2407.07144 · doi:10.1103/PhysRevB.111.L060504
Abstract
Interacting impurity spins adsorbed on surfaces have been suggested as basic components for applications in quantum computation and spintronics. Such spins usually prefer a parallel or antiparallel configuration, but weakly non-collinear alignments are possible due to the Dzyaloshinskii-Moriya interaction (DMI) that arises in the presence of relativistic spin-orbit coupling. Here, we show that an effective Dzyaloshinskii-Moriya-type interaction (DMTI) can emerge purely from superconducting correlations without any spin-orbit interaction. We give an analytical proof and provide a numerical study which shows that DMTI arises in mixed-parity superconductors solely from the superconducting pairing. Moreover, we show that the same effect can be realized in Josephson junctions between s-wave and p-wave superconductors, where a phase bias toggles the DMTI entirely on and off. These results enable a way to engineer spin textures using superconducting order.
4 pages + references, 4 figures
References in corpus (14)
- Quantum Computation with Quantum Dots
- Universal Quantum Computation with the Exchange Interaction
- Magnetic impurities on the surface of a topological insulator
- Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
- Electrically controllable surface magnetism on the surface of topological insulator
- Symmetries of Pairing Correlations in Superconductor-Ferromagnet Nanostructures
- Twisted exchange interaction between localized spins embedded in a one- or two-dimensional electron gas with Rashba spin-orbit coupling
- Symmetry-Protected Majorana Fermions in Topological Crystalline Superconductors: Theory and Application to Sr2RuO4
- Effect of Rashba splitting on RKKY interaction in topological insulator thin films
- From Early Theories of Dzyaloshinskii-Moriya Interactions in Metallic Systems to Today's Novel Roads
- Nodal superconducting exchange coupling
- Indirect Chiral Magnetic Exchange through Dzyaloshinskii-Moriya--Enhanced RKKY Interactions in Manganese Oxide Chains on Ir(100)
- RKKY interaction in triplet superconductors: Dzyaloshinskii-Moriya-type interaction mediated by spin-polarized Cooper pairs
- Bodge: Python package for efficient tight-binding modeling of superconducting nanostructures